Improvement in galvanic batteries



J. KIDDER GALVANIG laA'rTlsm.

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@attent @Mira dnited tant JEROME KIDDER, ()F NEW YORK. N.

Letters'Patent No. 108,602, dated October l25, 1870..

IMPROVEMENT IN GALVANIC BATTERIES.

The Schedule referred l1:0 in these Letters Patent and making part ofthe same 4constructed in accordance with my invent-ion;

Figure 2 isa top view of the same; and

Figure 3 is a partly sectional view of the two zines, and theirscrew-capsdetached.

Similar letters of reference indicate corresponding parts.

This invention consists in the novel construction and arrangement of agalvalnlc battery, whereby it is made very compact and so portable thatit may be carried in thepocket, or packed with ordinary baggage fortraveling.

It also consists in a tube attached to the cover or plug of theeell,.for the purpose of providing for the escape ot' the gases, withoutallowing them to come in contact with and corrode the brass screw-caps,such tube being capable of being easilyclosed to preventescape of liquidwhen the battery is being carried from place to place. y I

'lo enable others to construct galvanic batteries in vaccordance withiny invention, I will proceed to clescribe the same u-'ith'referenee tothe drawing.

A is a cup or cell,made", by preference, ot' glass, and of a size andform convenient to be carried in the pocket.

B is a plug of India rubber, or any other suitable material, tightlyclosing the .mouth of said cup.

C C are the zinc rods which forni the positive element and negative poleof the battery, andare made of a cylindrical shape, to present a largesurface (near the platina) within a small compass. These zinc rods arearranged inside of the cup A, and extend from near 'the bottom of thecup, a certain distance apart from each other, to the under surface ofthe plug B, through which their ends, that are of a reduced size, andprovided with a screw-thread, c, are passed to receive the screw-caps bb, which enable the zinc rods to be rigidly fastened to the elastic plugB,v and be securely kept in position when carried about or` packed away,and also form an air-tight connection with the plug.

Said zines are connected 'at the upper surface -of the plug B by meansof the plate o, which also serves as a washer for the screw-caps b b,connecting the zinc rods, to' form one pole audaid in preventingleakage.

D is the platinum wl1ich forins'the negative element and positive poleof the battery. l 'Io obtain a relativelyl large surface, thin ribbonsof platinum are coiled loosely in spiral form around a centrall core orrod, c. These coils may be wound one over another, and in oppositedirections, successively.

'The rod e extends from near the bottom of. the cup A through the plugB, and is securely held in placeA by the screw-cap, b', in .a similarmanner as the zinc rods. l l

Eis a tube, preferably made of India rubber or other exible material,connected with .an opening, j",

in the plug B, for .the purpose ot' allowing the fumes y or gases thatare generated when the battery is in op eration to pass olf, and it isextended a certain length beyond the top of the plug B, to prevent saidescaping fumes orgases from .coming in contact withand.

eorroding the brass screw-caps.

This tube, when made ot' India rubber or other.

suitableflexible material, also serves to close the battery entirely bytyiiig it' into. a knot, or by using-a clamp to close its opening, whenit can be safely packed A away or carriedin the pocket.

F F are connecting-wires, which are iirmly` held by the binding-screwsg` g.'

By this construction 4and arrangement a galvanic battery of a smallcompass, but of suiieient strength for practical purposes, islobtained,which may be eonveniently packed away for traveling, or be carried inconnections to the elastic plug Bsubstantially as herein' described.

3. The tube E, in combination with the plug B', substantially as and forthe purpose herein described.

JEROME RIDDER, M. D. Witnesses:

FRED. Harmes, It. E. RABEAU.

